20502993

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23813}}^1$

素因数の和:23864

約数の個数: 16

約数和(自身を含む): 32006016

約数和(自身を除く): 11503023

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23813, 71439, 166691, 500073, 976333, 2928999, 6834331, 20502993]

約数ペア:

[(1, 20502993), (3, 6834331), (7, 2928999), (21, 976333), (41, 500073), (123, 166691), (287, 71439), (861, 23813)]